Home / 789,444.49-1,089,165.80-643,998.85

Finding the Fourth Proportional to 789,444.49, 1,089,165.80 and 643,998.85

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Solution

The fourth proportional to 789,444.49, 1,089,165.80 and 643,998.85 is: 888,500.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    789,444.49 : 1,089,165.80 = 643,998.85 : x
  2. Step 2: Convert to fraction form
    789,444.49/1,089,165.80 = 643,998.85/x
  3. Step 3: Cross multiply
    789,444.49x = 1,089,165.80 × 643,998.85
  4. Step 4: Simplify right side
    789,444.49x = 701,421,517,923.92
  5. Step 5: Solve for x
    x = 701,421,517,923.92/789,444.49
  6. Step 6: Final answer
    x = 888,500.11

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.